We have not yet seen what man can make of man.

Behavior is determined by its consequences.

A fourth-grade reader may be a sixth-grade mathematician. The grade is an administrative device which does violence to the nature of the developmental process.

At this very moment enormous numbers of intelligent men and women of goodwill are trying to build a better world. But problems are born faster than they can be solved.

That's all teaching is; arranging contingencies which bring changes in behavior.

Indeed one of the ultimate advantages of an education is simply coming to the end of it.

The real problem is not whether machines think but whether men do.